The original output cables for the SL1200 are no longer available. Due to the strain relief system on these not just any cable will fit. There are however several good quality cables out there that will fit the SL1200, just don’t try to use a super fat cable as you will never get the strain relief back on.
Other than that these tables are almost bullet proof. It is a shame they stopped making these.
Here is a link to a utube video that shows what you would be up against – If you attempt it be sure to use a better soldeing iron than this dude did. http://www.youtube.com/watch?v=wK9rK6yLR7U&feature=player_detailpage
Randy Morgan ….. Owner & head technician at All Service Musical Electronics Repair